I would like to say, "I'm going to the cafe" in Latin, but the best I can come up with is "Eo ad cafe." What would be a good choice for "cafe"? I'm not sure if a similar concept existed in Ancient Rome (e.g. with other food/beverages), so there's a good chance I will be asking for a modern word or neologism. But whatever you think is the best choice - and gets well supported - should make me content.
There have already been a few answers, but I have always liked the Morgan and Silva Furman University Lexicon, so here are the terms it gives for "cafe":
- thermopolium, -i, n.
- taberna cafearia
- taberna caldaria
- domus cafearia
This corroborates Ben Kovitz's answer, and provides several other options. The last few options were listed under "cafe/coffee-house," which may add a little variety.
I would suggest that if the Romans knew about coffee, it would most likely come via Greek, since coffee originated even further to the East in Ethiopia. The Modern Greek word for "cafe" is καφενείο, so I would suggest remodeling that as a Classical Greek καφενεῖον and then Latinizing that. I think either caphenion or capheneum would be acceptable.
De hac re nullam auctoritatem superiorem scio quam @NemoOudeis, qui vocabulum taberna caffearia sive in brevi taberna scribit:
Ainsworth's Dictionary (abridged) of 1758 suggests kuphipolium for coffee-house, and kupha for coffee.